Locking device for eccentric bushings



. F. J. NICAVOY.

LOCKING DEVICE FOR ECCENTRIC BUSHINGS.

APPLICATION FILED SEPT. 3o. I9I9.

1,348,022. Patented July 27, 1920.

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' e ff d fd m A k A TTR/VEYS To all whom z'tfmay concern:

i UNITED STATES PATENT oFEicE.

. rmor's JOSEPHMCVOY, or NEWARK, NEW UERSEY.

LOCKING DEVICE lFOR ECCENTRXC BUSHINGS.

y vspecifica/tin of Letters Patent.

y vhpplimaltion led September 30, l'1919. Scnia1`No.l27,382.

new and Improved Locking Device for Ec# centric Bushings, of which :the following is a full, clear, and exact description.

The invention in `its general raspect relates tointernal combustion motors such as are used in automobiles andother vehicles.

The object -of the invention Vis -to Aprov-ide a new and improved locking device fora bushing provided witha-n eccentric on which is journaled a sprocket wheel engaged rby a sprocket chain to lbe tightened, the said sprocket wheel being connected with the shaft off the motor generator Fand the sprocket chain being dri-ven from the motor shaft and driving the motor cam shaft and.

the ignition timer shaft. I

Another Objectis to permit of quickly'un;

locking the eccentric bushing vwith a Aview to. 'tighten the sprocket chain whenever it is necessary to do so.

Another object is to permit of unlocking and turning the eccentric bushing without requiring disassembling of the adjacent parts of the motor.

Another object is to permit of attaching the locking device to motors as iiow constructed.

W'ith these and other objects in view, the

Y represented in the accompanying drawings forming a part of this specification, in which` similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a sectional side elevation of the locking device as applied, the section being on the line 1-1 of Fig. 2;

Fig. 2 isa cross section of the same on the line 2-2 of Fig. 1;

Fig. 3 is a face view of the locking device; and.

Fig. 4 is a plan View of the same.

In internal combustion engines as now generally constructed, it is occasionally necessary to tighten the sprocket chain driven from the motor shaft and drivingY the generator shaft, the motor cam shaft and the ignition timer shaft. The sprocket wheel connected with the generator shaft is journaled on an eccentric bushing and when it becomes necessary `to tighten the sprocketA `chain then the .bushing is. unfastened and turned to correspondingly shi-ft the nsprocket wheel with a View 'to tighten the sprocketchain. The means' heretofore employed for fastening the bushing in place made it Anecessary to disassemble a number ,of adjacent parts of the motor in order to allow turning of the bushingand tightening ofthesprocket chain.` In practice, this operation usually ed Ito l.turn the motor generator sprocket wheel `14, connected by a sprocket chain (not shown) with sprocket wheels on'the motor Patented Jiiiy 27,. 1920.

cam shaft, which actuates the valves and drives the ignition timer shaft. The motor generator sprocket wheel 14V is further provided lwith a coupling member 15 slidingly connected with a coupling member 16 secured on the shaft 17 of the motor generator 1S to actuate the latter.v

The bushing 10 is provided with a flange 2() fitting against the inner face of the bearing 11 and spaced a short distance from the motor generator 18, as plainly shown in Fig. 1. Thefface of this flange 2() is provided with spaced recesses 22 arranged in a circle concentric with the peripheral face of the flange 20, and sundry of these recesses 22 are engaged by lugs or pins 23 formed on one face of a locking member 24 provided with an angular flange 25 fitting on a top ..26 of a portion of thefmotor frame 12 directly above the bushing 10. Bolts 27 or other suitable fastening devices engage the flange 25 and screw in the top 26 to securely fasten the locking member 24 in place. It will be noticed that by the arrangement described, the pins 23 in engagement with the recesses 22 holdthe bushing 10 against turningv in the bearing 11. When it is desired to turn the bushing 10 in its bearing 11 for tightenfor the operator to remove the bolts 27 and thus unfasten the locking member 24, which i can now be moved tothe left with a view to disengage the pins 23 `from the recesses 29.. The locking member 24 is in the shape of a Vfork and straddling the hub 29 of the motor e generator 18 to allow .convenient removal of the locking member Without disturbing any Vfboltse?. It is understood vthat very little room is had between the bushing Vl0 andthe motor generator 1S to accommodate the lockingr member 24C and allow its removal.

Y From the foregoing it will be seen that by the arrangement described the operator is enabled to quickly unlock the bushing l0 with a view to turnv the same for tightening the sprocket chain.

It is `understood that I do not lim-it:myselfV to the means shown for' fastening the locking'meinber 24 in place on the motorframe 12, as other suitable means ymay be employed for the purpose, and I also do not limit my self to the pins 23 and recesses 22 shown and described for locking the bushing in place and other suitable and quickly removable locking means may be employed. A Having thus described; my invention, I claim as new and desire to secure by, Letters Patentzf'- .1. In an internal combustion motor, an

y, eccentric bushing mounted to turn in a fixed bearing, and a detachable locking member adjacent` one lfacez-ofthe bushing, the said bushing and the said locking member havf ing a plurality of interlocking members to hold the bushing against turning in any one l of a series of adjustedpositions.

2;- In an internal combustion motor, ain eccentricbushing` provided with spaced rec'essesarran'ged in a circle concentric to the peripheralfaceof the bushing', and a lori;-A ing member provided with pins adal'itei-l to engage sundry of the said recesses.-

3. In an internal combustion motor, a mov tor frame rovided' With a bearinO and a to .i

. 2D flange, an' eccentric bushing Journaled 1n the saidv bearing and' provided 'with a flange iii#l ting against the inner side of the 'said bearing, the-flange being provided withV spaced recesses arrangedin acircle concentric with the peripheral face of the bushing, a locking member having a fork provided with pins Y engaging sundry ofthe said lrecesses, Vthe said locking member having an angular iange, and fasteningmeans detachably fastening the said locking memberV flange to the said frame't'op flanoe.

FRANCISV osErH KVAMaivor j 

